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Reversible image data hiding with contrast enhancement

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I3E Technologies
I3E Technologies

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Engineering
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REVERSIBLE IMAGE DATA HIDING WITH CONTRAST ENHANCEMENT ABSTRACT In this letter, a novel reversible data hiding (RDH) algorithmis proposed for digital images. Instead of trying to keepthe PSNR value high, the proposed algorithm enhances the contrastof a host image to improve its visual quality. The highest twobins in the histogram are selected for data embedding so that histogramequalization can be performed by repeating the process.The side information is embedded along with the message bits intothe host image so that the original image is completely recoverable.The proposed algorithm was implemented on two sets of images todemonstrate its efficiency. To our best knowledge, it is the first algorithmthat achieves image contrast enhancement byRDH. Furthermore,the evaluation results show that the visual quality can be preservedafter a considerable amount of message bits have been embeddedinto the contrast-enhanced images, even better than threespecificMATLAB functions used for image contrast enhancement.

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  • 1. REVERSIBLE IMAGE DATA HIDING WITH CONTRAST ENHANCEMENT ABSTRACT In this letter, a novel reversible data hiding (RDH) algorithmis proposed for digital images. Instead of trying to keepthe PSNR value high, the proposed algorithm enhances the contrastof a host image to improve its visual quality. The highest twobins in the histogram are selected for data embedding so that histogramequalization can be performed by repeating the process.The side information is embedded along with the message bits intothe host image so that the original image is completely recoverable.The proposed algorithm was implemented on two sets of images todemonstrate its efficiency. To our best knowledge, it is the first algorithmthat achieves image contrast enhancement byRDH. Furthermore,the evaluation results show that the visual quality can be preservedafter a considerable amount of message bits have been embeddedinto the contrast-enhanced images, even better than threespecificMATLAB functions used for image contrast enhancement.